Hotels can be very cheap in China. I stayed at a hotel opposite the Times Square in central Jida, Zhuhai. I would love to tell you the name, but unfortunately I do not read Chinese.
I was lucky enough to get a standard room for a deluxe price 168RMB per night.
Thats roughly £16 per night.
According to friends of mine you can find hotels for around 100 RMB (£10) a night if you look around enough.
Note: In most hotels, your room card is used to power the electricity in your room. Most have a card reader you slot it into- make sure you remove this before you leave your room as you cannot get out!!